a boy of 50kg mass climbs 30stairs in 10sec. if the height of each stair is 15cm. Then calculate his power(g = 10m/ssquare)
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Answers
Answered by
1
Answer:
225j
Explanation:
power is work done per unit time
work here is mgh
50*10*30*15*10^-2
=2250
power=w/t
=2250/10
=225 j
Answered by
1
Answer:
225 Watt
Explanation:
Height at 30 steps , h = 30 × 0.15 = 4.5 m
Change in potential energy = mgh = 50 × 10 × 4.5 = 2250 J
So, Work done by the man , W = 2250 J
Power used , P= work done ÷ Time = 2250 ÷ 10 = 225 W
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